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ntfs: preserve RECALL_ON_OPEN on WSL special-file reparse points

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When creating a WSL special file (socket, fifo, character or block
device), __ntfs_create() sets FILE_ATTRIBUTE_RECALL_ON_OPEN in ni->flags
as valid_reparse_data() requires for these tags. This flag is
intentionally absent from $FILE_NAME, so the subsequent reload

        ni->flags = fn->file_attributes;

drops it from ni->flags, the authoritative copy written back to
$STANDARD_INFORMATION. The on-disk file_attributes becomes 0x00000404
instead of 0x00040404, and after a remount valid_reparse_data() rejects
the reparse point while fsck reports "$REPARSE_POINT data is corrupted".

Preserve the RECALL_ON_OPEN bit across the reload. Symlinks do not set
that bit, so they are unaffected.

Fixes: af0db57d42 ("ntfs: update inode operations")
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
This commit is contained in:
Namjae Jeon 2026-07-11 16:36:55 +09:00
parent dd3210c47e
commit 523307b851
1 changed files with 2 additions and 1 deletions
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3
fs/ntfs/namei.c
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@ -685,7 +685,8 @@ static struct ntfs_inode *__ntfs_create(struct mnt_idmap *idmap, struct inode *d
mutex_unlock(&dir_ni->mrec_lock);
mutex_unlock(&ni->mrec_lock);
ni->flags = fn->file_attributes;
ni->flags = fn->file_attributes |
(ni->flags & FILE_ATTRIBUTE_RECALL_ON_OPEN);
/* Set the sequence number. */
vi->i_generation = ni->seq_no;
set_nlink(vi, 1);